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Power Fundamentals

Switchgear

Switchgear is equipment used to switch, protect, isolate, and meter electrical circuits. In data centers, switchgear configuration is central to redundancy, maintenance, fault isolation, safety, and expansion planning.

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Interruptible service

Interruptible service allows a utility or grid operator to curtail some customer load under defined conditions, often in exchange for lower rates or credits. It can be valuable for flexible load but is difficult for critical IT load unless paired with backup generation, load shifting, or non-critical processes.

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Lithium-ion battery

Lithium-ion battery is a high-energy-density battery chemistry commonly used in modern UPS and BESS systems. It can reduce footprint and maintenance compared with older chemistries, but it requires careful thermal, fire, and controls design.

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Arc flash study

An arc flash study estimates incident energy from electrical faults and supports worker-safety labeling and procedures. It is not a casual calculator item; it requires qualified engineering analysis and current system data.

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